; Options for the S/390 / zSeries port of the compiler. ; Copyright (C) 2005-2015 Free Software Foundation, Inc. ; ; This file is part of GCC. ; ; GCC is free software; you can redistribute it and/or modify it under ; the terms of the GNU General Public License as published by the Free ; Software Foundation; either version 3, or (at your option) any later ; version. ; ; GCC is distributed in the hope that it will be useful, but WITHOUT ANY ; WARRANTY; without even the implied warranty of MERCHANTABILITY or ; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License ; for more details. ; ; You should have received a copy of the GNU General Public License ; along with GCC; see the file COPYING3. If not see ; . HeaderInclude config/s390/s390-opts.h ; The architecture name to use in diagnostics. Variable const char *s390_arch_string Variable int s390_tune_flags Variable int s390_arch_flags Variable HOST_WIDE_INT s390_warn_framesize = 0 m31 Target Report RejectNegative Negative(m64) InverseMask(64BIT) 31 bit ABI. m64 Target Report RejectNegative Negative(m31) Mask(64BIT) 64 bit ABI. march= Target RejectNegative Joined Enum(processor_type) Var(s390_arch) Init(PROCESSOR_max) Generate code for given CPU. Enum Name(processor_type) Type(enum processor_type) EnumValue Enum(processor_type) String(g5) Value(PROCESSOR_9672_G5) EnumValue Enum(processor_type) String(g6) Value(PROCESSOR_9672_G6) EnumValue Enum(processor_type) String(z900) Value(PROCESSOR_2064_Z900) EnumValue Enum(processor_type) String(z990) Value(PROCESSOR_2084_Z990) EnumValue Enum(processor_type) String(z9-109) Value(PROCESSOR_2094_Z9_109) EnumValue Enum(processor_type) String(z9-ec) Value(PROCESSOR_2094_Z9_EC) EnumValue Enum(processor_type) String(z10) Value(PROCESSOR_2097_Z10) EnumValue Enum(processor_type) String(z196) Value(PROCESSOR_2817_Z196) EnumValue Enum(processor_type) String(zEC12) Value(PROCESSOR_2827_ZEC12) EnumValue Enum(processor_type) String(z13) Value(PROCESSOR_2964_Z13) EnumValue Enum(processor_type) String(native) Value(PROCESSOR_NATIVE) DriverOnly mbackchain Target Report Mask(BACKCHAIN) Maintain backchain pointer. mdebug Target Report Mask(DEBUG_ARG) Additional debug prints. mesa Target Report RejectNegative Negative(mzarch) InverseMask(ZARCH) ESA/390 architecture. mhard-dfp Target Report Mask(HARD_DFP) Enable decimal floating point hardware support. mhard-float Target Report RejectNegative Negative(msoft-float) InverseMask(SOFT_FLOAT, HARD_FLOAT) Enable hardware floating point. mhotpatch= Target RejectNegative Report Joined Var(s390_deferred_options) Defer Takes two non-negative integer numbers separated by a comma. Prepend the function label with the number of two-byte Nop instructions indicated by the first. Append Nop instructions covering the number of halfwords indicated by the second after the label. Nop instructions of the largest possible size are used (six, four or two bytes), beginning with the largest possible size. Using 0 for both values disables hotpatching. mlong-double-128 Target Report RejectNegative Negative(mlong-double-64) Mask(LONG_DOUBLE_128) Use 128-bit long double. mlong-double-64 Target Report RejectNegative Negative(mlong-double-128) InverseMask(LONG_DOUBLE_128) Use 64-bit long double. mhtm Target Report Mask(OPT_HTM) Use hardware transactional execution instructions. mvx Target Report Mask(OPT_VX) Use hardware vector facility instructions and enable the vector ABI. mpacked-stack Target Report Mask(PACKED_STACK) Use packed stack layout. msmall-exec Target Report Mask(SMALL_EXEC) Use bras for executable < 64k. msoft-float Target Report RejectNegative Negative(mhard-float) Mask(SOFT_FLOAT) Disable hardware floating point. mstack-guard= Target RejectNegative Joined UInteger Var(s390_stack_guard) Set the max. number of bytes which has to be left to stack size before a trap instruction is triggered. mstack-size= Target RejectNegative Joined UInteger Var(s390_stack_size) Emit extra code in the function prologue in order to trap if the stack size exceeds the given limit. mtune= Target RejectNegative Joined Enum(processor_type) Var(s390_tune) Init(PROCESSOR_max) Schedule code for given CPU. mmvcle Target Report Mask(MVCLE) mvcle use. mzvector Target Report Mask(ZVECTOR) Enable the z vector language extension providing the context-sensitive vector macro and enable the Altivec-style builtins in vecintrin.h mwarn-dynamicstack Target RejectNegative Var(s390_warn_dynamicstack_p) Warn if a function uses alloca or creates an array with dynamic size. mwarn-framesize= Target RejectNegative Joined Warn if a single function's framesize exceeds the given framesize. mzarch Target Report RejectNegative Negative(mesa) Mask(ZARCH) z/Architecture. mbranch-cost= Target Report Joined RejectNegative UInteger Var(s390_branch_cost) Init(1) Set the branch costs for conditional branch instructions. Reasonable values are small, non-negative integers. The default branch cost is 1. mlra Target Report Var(s390_lra_flag) Init(1) Save Use LRA instead of reload.